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Keywords = Eastern Messinia Fault Zone

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17 pages, 8603 KB  
Article
Cosmogenic 36Cl Dating of Fault Activity in East Messinia, Greece
by Constantin D. Athanassas, Vassiliki Kanavou, Regis Braucher, Ioannis Vakalas, Ioannis Ladas, Katerina Theodorakopoulou and Harris Zampoukos
GeoHazards 2026, 7(1), 22; https://doi.org/10.3390/geohazards7010022 - 10 Feb 2026
Viewed by 1468
Abstract
This work deals with the quantification of long-term fault slip rates as a basis for seismic hazard assessment along a segment of the Eastern Messinia Fault Zone (EMFZ) in southwestern Peloponnese, Greece. Using cosmogenic 36Cl exposure dating, it provides independent numerical constraints [...] Read more.
This work deals with the quantification of long-term fault slip rates as a basis for seismic hazard assessment along a segment of the Eastern Messinia Fault Zone (EMFZ) in southwestern Peloponnese, Greece. Using cosmogenic 36Cl exposure dating, it provides independent numerical constraints on recent deformation. The resulting late Holocene slip-rate estimates (~0.32–0.46 mm/yr) confirm ongoing fault activity, consistent with earlier paleoseismological and geomorphic studies, while indicating spatially distributed extension. These rates imply loading timescales of several hundred years for moderate (Mw ≈ 5.8–6.0) earthquakes. Although individual exposure ages cannot be uniquely associated with single seismic events, they offer robust benchmarks for cumulative displacement and long-term strain accumulation. Overall, this work demonstrates how numerical dating methods (particularly cosmogenic nuclide techniques applied to carbonate bedrock) can link geological observations with engineering requirements by constraining fault behavior over 103–105 year timescales and improving long-term seismic hazard evaluation in complex tectonic settings. Full article
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